What difficulties would arise due to lack of uniformity in measurement in different countries? Write in brief.​

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?